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        content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
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  <title>const 定义常量</title>
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<body>
  <script>
    //声明常量
    const SCHOOL = '尚硅谷'

    //1. 一定要赋初始值
    // const A
    //2. 一般常量使用大写(潜规则)
    // const A = 100
    //3. 常量的值不能修改
    // SCHOOL = 'ATGUIGU'
    //4. 块儿级作用域
    // {
    //     const PLAYER = 'UZI'
    // }
    // console.log(PLAYER)   //这里会报错  PLAYER is not defined
    //5. 对于数组和对象的元素修改, 不算做对常量的修改, 不会报错
    const TEAM = ['UZI', 'MLXG', 'Ming', 'Letme']
    TEAM.push('Meiko')
    console.log(TEAM)
  </script>
</body>
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